Thyristor Circuit. These terminals are anode cathode and gate. When using the thyristor as a switch it behaves like an electronic latch because once activated it remains in the on state until manually reset.
All portions of the circuit except for the rc network are shaded for de emphasis. So it acts as a bistable switch under this condition. The thyristor or silicon controlled rectifier operates in a different way to that of a standard bipolar transistor or fet.
Whenever a gate receives a triggering current then it starts conducting until the voltage across the thyistor device is under forward bias.
Whenever a gate receives a triggering current then it starts conducting until the voltage across the thyistor device is under forward bias. The thyristor has two electrodes that are connected to the main circuit to be controlled. In this circuit a series resistor capacitor network creates a phase shifted voltage for the gate terminal of a power control device known as a triac. A thyristor is a four layer solid state semiconductor device with p and n type material.
